14TH AND 15TH CENTURIES: Puerta del Sol-Calle Mayor-Plaza de la Villa. There are two buildings in the Plaza de la Villa dating from the Middle Ages: the Casa (house) and the Torre (tower) de los Lujanes (15the century), where King Francis I of France was held prisoner following the Battle of Pavia. The building to the right of it with a Mudejar doorway if the Hemeroteca Municipal, which contains more than 70.000 bound volumes of newspapers printed in the 18th and 19th centuries. It is open to the public from 9 a.m. to 1 p.m.
Puerta del Sol-Calle Mayor-Calle del Nuncio-Plaza del Marqués de Comillas. Just beyond the Plaza de la Villa, to the right of the Calle Mayor, there is an alley leading up to San Nicolás de los Servitas, the oldest church in Madrid. It has a Moorish style tower which evokes the days of the Arab occupation. There is another interesting church to the left of the Calle Mayor, beyond the Calle del Sacramento and the Calle del Nuncio: the church of San Pedro el Real or el Viejo, the belltower of which shows traces of the Mudejar style. Close by the Plaza del Marqués de Comillas. Formerly known as the Plaza de la Paja, a square that was very important in the Middle Ages. The Morería, or old Moorish Quarter, spreads between this square, the Plaza de la Cruz Verde, El Alamillo and the Ronda de Segovia, and ends up at the modern Viaduct.